Yes Sync and mobile friendly version is what I require my self and will try to add the features, when I'll have enough time.

About making it as a side panel, then I would really need to dive in browser specifics, to hook up it to internal extension api, which I'd rather not do for now.

About importing from notes.adr, I'd need to look at that format, if it is not a binary data, most probably that can be done from pure javascript.

But on the other side, the code is freely available, and if any one wants to modify it or use locally (without access to Internet) one can easily do that

Hello,
as many of you, I was kind of disappointed when Opera dropped support for Notes, as it was one of my most used features.

So I decided to try to create my own notes, but now web based and browser independent - WebNotes.

So here is more info on that: http://webcodingeasy.com/JS-classes/WebNotes
Here is the code: https://github.com/ar2rsawseen/WebNotes
And here is a live demo you can try and use: http://notes.waterbreadinternet.com/

Hope that helps anyone.

Now onto covering other missing features